Hel, Goddess of Helheim

You can remove 1 charge counter from 'Yggdrasil, the World Tree' instead of paying this creature's mana cost. If you use this effect, this card enters the Battlefield tapped.
{u}{u}, Tap target creature, it doesn't untap during the next untap step.
"You'd be surprised what I can do, brother." -Hel, Goddess of Helheim